Influence of N,N′-dimethylaminoethanol as an inhibitor on the chloride threshold level for corrosion of steel reinforcement

被引：33
作者：
Xu, J. [1 ,2 ]
Jiang, L. [1 ]
Xing, F. [2 ]
机构：
[1] Hohai Univ, Dept Mat Sci & Engn, Nanjing 210098, Peoples R China
[2] Shenzhen Univ, Shenzhen Durabil Ctr Civil Engn, Shenzhen 518060, Peoples R China
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2010年 / 61卷 / 09期
关键词：
CONCRETE STRUCTURES; ALKALINE-SOLUTIONS; PORE SOLUTIONS; BEHAVIOR; CIRCUIT; NITRITE; MORTAR;
D O I：
10.1002/maco.200905393
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The aim of this study is to examine the influence of N,N'-dimethylaminoethanol (DMEA) as an inhibitor on the chloride threshold level for corrosion of steel in a concrete contaminated by chlorides. The experiment has been carried out in a saturated Ca(OH)(2) solution and chloride contaminated concrete containing different chloride and DMEA level. The critical point of corrosion onset is concluded by combining the open-circuit potential (E(corr)) with corrosion current (I(corr)), which is decided by electrochemical impedance spectra (EIS) in the solution. Besides, the EIS has also been applied to determinate the chloride threshold level in the chloride contaminated concrete. It has been found that the presence of DMEA represented as an amino-alcohol inhibitor, exerts little influence on the chloride threshold level for corrosion of steel in the solution. Similarly, the effect of the DMEA on the chloride threshold level in the chloride contaminated concrete, is also negligible.
引用
收藏
页码：802 / 809
页数：8
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